Cold water system for lithium battery

Abstract

The utility model relates to the field of cold water systems, in particular to a cold water system for a lithium battery. The cold water system for the lithium battery comprises an external circulating water conveying pipe, an external circulating water output pipe, a water chilling unit, a heat exchange device and a cold water temporary storage box, and the heat exchange device comprises a first input pipeline, a first output pipeline, a second input pipeline, a second output pipeline, a first cooling pipe and a second cooling pipe. The first input pipeline is connected with an external circulating water conveying pipe, the first output pipeline is connected with an external circulating water output pipe, the second input pipeline is connected with the water chilling unit, the second output pipeline is connected with the cold water temporary storage box, and a first cooling pipe is arranged between the first input pipeline and the first output pipeline. And a second cooling pipe is arranged between the second input pipeline and the second output pipeline. According to the cold water system for the lithium battery, in summer, to-be-cooled water firstly passes through the cooling unit and then passes through the heat exchange device to reach the cold water temporary storage box; and in winter, the to-be-cooled water can directly enter the heat exchange device and reach the cold water temporary storage box. The energy-saving effect can be achieved, and repeated starting of the cooling unit is avoided.

Description

Technical Field

[0001] The utility model relates to the field of cold water systems, in particular to a cold water system for lithium batteries. Background Art

[0002] The existing cold water system for lithium batteries includes a chiller, a heat exchanger and a cold water buffer tank, but they are connected in sequence. Even in winter when the temperature is lower, the water to be cooled will pass through the chiller, causing the chiller to shut down frequently, increasing the failure rate and also increasing energy consumption to a certain extent. Summary of the invention

[0003] The utility model provides a cold water system for lithium batteries, and the specific scheme is as follows:

[0004] A cold water system for lithium batteries, comprising an external circulating water delivery pipe, an external circulating water output pipe, a chiller, a heat exchange device and a cold water cache box, the heat exchange device comprising a first input pipe, a first output pipe, a second input pipe, a second output pipe, a first cooling pipe and a second cooling pipe, the first input pipe is connected to the external circulating water delivery pipe, the first output pipe is connected to the external circulating water output pipe, the second input pipe is connected to the chiller, the second output pipe is connected to the cold water cache box, a first cooling pipe is between the first input pipe and the first output pipe, and a second cooling pipe is between the second input pipe and the second output pipe.

[0005] The first cooling pipe is a straight pipe, and the second cooling pipe is a coil. The straight pipe allows the cooling water to pass faster, while the coil has a relatively slow cooling speed.

[0006] The coil is wound around the outside of the straight pipe, which can save more space and avoid waste of space.

[0007] The heat exchange device comprises a shell, on which a coolant input pipe and a coolant output pipe are arranged. The shell of the heat exchange device is filled with coolant, so as to cool the water to be cooled in the first cooling pipe and the second cooling pipe.

[0008] A fixing plate is provided inside the shell, the first cooling pipe is a straight pipe, a plurality of openings are provided on the fixing plate, and the openings and the straight pipe are arranged in coordination. A cavity exists between the fixing plate and the shell, which can accommodate cooling water to be cooled in advance and cooling water to be cooled in the later stage.

[0009] The utility model discloses a cold water system for lithium battery. In summer, the cooling water first passes through the cooling unit and then passes through the heat exchange device to reach the cold water buffer tank; while in winter, the cooling water can directly enter the heat exchange device and reach the cold water buffer tank. The energy-saving effect can be achieved and repeated startup of the cooling unit can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A schematic diagram of the structure of a cold water system for lithium batteries in the utility model;

[0011] Figure 2 Partial structural diagram of a lithium battery cooling water system of the utility model Figure 1 ;

[0012] Figure 3 Partial structural diagram of a lithium battery cooling water system of the utility model Figure 2 ;

[0013] The numbers are as follows: 1. Chiller; 2. Heat exchange device; 21. First input pipe; 22. First output pipe; 23. Second input pipe; 24. Second output pipe; 25. First cooling pipe; 26. Second cooling pipe; 27. Shell; 28. Coolant input pipe; 29. ​​Coolant output pipe; 210. Fixed plate; 3. Cold water buffer tank; 4. External circulating water delivery pipe; 5. External circulating water output pipe. DETAILED DESCRIPTION

[0014] Combine the following Figure 1-3 For further explanation:

[0015] A cold water system for lithium batteries comprises an external circulating water delivery pipe 4, an external circulating water output pipe 5, a chiller 1, a heat exchange device 2 and a cold water cache box 3. The heat exchange device 2 comprises a first input pipe 21 (provided with a valve), a first output pipe 22 (provided with a valve), a second input pipe 23 (provided with a valve), a second output pipe 24 (provided with a valve), a first cooling pipe 25 and a second cooling pipe 26. The first input pipe 21 is connected to the external circulating water delivery pipe 4, the first output pipe 22 is connected to the external circulating water output pipe 5, the second input pipe 23 is connected to the chiller 1, the second output pipe 24 is connected to the cold water cache box 3, the first cooling pipe 25 is between the first input pipe 21 and the first output pipe 22, and the second cooling pipe 26 is between the second input pipe 23 and the second output pipe 24.

[0016] The first cooling pipe 25 is a straight pipe, and the second cooling pipe 26 is a coil. The straight pipe allows the cooling water to pass faster, while the coil has a relatively slow cooling speed. The coil is wrapped around the outside of the straight pipe. This can save more space and avoid space waste.

[0017] The heat exchange device 2 includes a housing 27, on which a coolant input pipe 28 and a coolant output pipe 29 are provided. The housing 27 of the heat exchange device 2 is filled with coolant, so as to cool the water to be cooled in the first cooling pipe 25 and the second cooling pipe 26.

[0018] A fixing plate 210 is provided in the housing 27, and the first cooling pipe 25 is a straight pipe. A plurality of openings are provided on the fixing plate 210, and the openings and the straight pipe are arranged in coordination. There is a cavity between the fixing plate 210 and the housing 27, which can accommodate cooling water to be cooled in advance and cooling water to be cooled in the later stage.

[0019] The utility model discloses a cold water system for lithium batteries. In summer, the water to be cooled first passes through a cooling unit 1, and then passes through a heat exchange device 2 to reach a cold water cache tank (i.e., the second input pipe 23 inputs the heat exchange device 2, and the second output pipe 24 outputs the heat exchange device 2). In winter, the water to be cooled can directly enter the heat exchange device 2 to reach the cold water cache tank (i.e., the first input pipe 21 inputs the heat exchange device 2, and the first output pipe 22 outputs the heat exchange device 2).

[0020] The above description is not a limitation of the design of the utility model, and the design of the utility model is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the design of the utility model also fall within the protection scope of the design of the utility model.

Claims

1. A cold water system for lithium batteries, characterized in that: It includes an external circulating water delivery pipe, an external circulating water output pipe, a chiller, a heat exchange device and a cold water cache tank. The heat exchange device includes a first input pipe, a first output pipe, a second input pipe, a second output pipe, a first cooling pipe and a second cooling pipe. The first input pipe is connected to the external circulating water delivery pipe, the first output pipe is connected to the external circulating water output pipe, the second input pipe is connected to the chiller, and the second output pipe is connected to the cold water cache tank. The first cooling pipe is between the first input pipe and the first output pipe, and the second cooling pipe is between the second input pipe and the second output pipe.

2. A cold water system for lithium batteries as claimed in claim 1, characterized in that: The first cooling pipe is a straight pipe, and the second cooling pipe is a coil.

3. A cold water system for lithium batteries as claimed in claim 2, characterized in that: The coiled tubing is wrapped around the outside of the straight pipe.

4. A cold water system for lithium batteries as claimed in claim 1, characterized in that: The heat exchange device comprises a shell, on which a coolant input pipeline and a coolant output pipeline are arranged.

5. A cold water system for lithium batteries as claimed in claim 4, characterized in that: A fixing plate is arranged inside the shell, the first cooling pipe is a straight pipe, a plurality of openings are arranged on the fixing plate, and the openings and the straight pipe are arranged in coordination.

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